Driving mechanism of radiator-fans and water-impellers for motorvehicles and the like



h. I SULLY.

DRIVING MECHANISM OF RADIATOR FANS AND WATER IMPELLERS FOR MOTOR VEHICLES AND THE LIKE.

APPLICATION FILED APR. 2|. I920.

Patented Jail. 18, 1921..

omreo srA'res PATENT ore ce.

RULANJ) JAMES SULLY, OF CAVERSI I AM, READING, ENG-LAND, ASSIGNOR TO HERBERT MEET-ON, F CAVERSHAM, READING, ENGLAND.

nnrvrne MECHANISM or nenmroarnns AND lUATER-IMPELL ERS FOR MOTOR- .vnnronns AND THE LIKE.

Specification of Letters Patent.

Patented Jan. 18, 1921.

Application filed April 21, 1920. Serial No. 375,582.

To all whom it may concern:

Be it known that l, RoLANn JAMES SULLY, a subject or": the King of England, residing in Cave'rsham, Reading, England, have invented certain new and useful Improvements in the'Driving Mechanism of Radiator-F ans and Water-Impellers for Motor- .Vehicles and the like, of which the followin is a specification. 19 ihis invention lies in improvements in or relating to the driving mechanism of radiator fans and water-impellers for motor vehicles and the like. Gne object is to provide a more simple construction of the combined drive for the radiator-fan and waterimpeller when these are, mounted co-axially so that a pulley mounted on the fan serves alsoto drive the impeller. It has alreadybeen proposed to mount a 2 0 radiator fan on the same spindle as a helical or otherwater-impeller for the radiator ot' a motor-vehicle, such spindle being generally driven by a pulley mounted thereon, and in such cases a gland is provided hetween the watei impeller and the fan to prevent leakage of water from the impeller chamber, and a bearing is provided either combined with or separate from this gland.

According to the present invention a radiatoni'an and impeller. drive wherein the impe'ller, and the fan with its driving pulley, {are rigidly mounted on opposite ends of the same spindle to form one rotating unit, is characterized by the rotating parts being supported at the impeller end'by a bearing surrounding the spindle and at the fan end by a' single-raceball-bearing in the plane of the driving pulley. Thusonly two beargings are provided: the single-race ball-bear- 40 lug in the plane of the driving pulley takes the whole of the lateral pull of the belt so jthat no bending moment is applied to the spindle and the second bearing adjacent to the impeller holds the whole of the parts steadily in line, without however having to hear any appreciable load.

' Preferably a stufiing-box' is provided on the spindle. betwe n-the two bearings. A very compactconstfglction is thus provided in which although, the bearings are well spaced, the overall len h of the spindle is not great and yet su icient room 1s easily provided for access to and adjustment of the stufiing-box.

To these ends, 'the invention consists in the construction, arrangement and combina-. tion of parts described hereinafter and pointed out in the claims The accompanying drawing represents,

malnly in longitudinal. section, one embodimentof this invention. A radiator fan 1 is mounted on or formed ntegral with a cup 2 which may conveniently have a flange 3 forming one rim of a driving pulley, the other rim 4 being screwed on to the cup 2. The cup 2 is secured to one end of a driving spindle 5, which, at its opposite end, carries a waterimpeller 6. This impeller is disposed in an impeller chamber 7 which forms part of the fixed framework and of the water circulation system. I

As shown in the drawing, a bearing is formed within the cup 2, which surrounds and embraces a fixed bearing-member 8,

' which also forms a part of the fixed framework and which embracesth spindle 5, but

need not be a tight fit thereon.

A single-race ball-bearing 9 isdisposed between the cup 2 and the fixed bearin member 8. The ball-bearing may be he (1 in position on the fixed member by a locknut 10, and similarly the ball-bearing 9 and the removable pulley member 4 may be held in position in relation to the cup 2 by means of a lock-nut 11'.

A land 12 of a stufiing-bor is disposed in the xed framework at the end of the inipeller chamber 7 through which the driving spindle 5 passes. It will be seen that this gland 12 is well separated from the bearingmember 8. The result is that if any wear should take place inthe bearing, the effect of that wear upon the gland would be minimized. As a matter of fact, with theballbearing external to the fixed bearing-memher 8, it is easy to make adjustments to compensate for any wear that may take place. Lubricators 13, 14 may be provided for the gland-bearing and the fan-bearing respectively.

One a use chief featfi'res' of-thisinvention lies in the arrangement of the bearing for the-fan drive end of the spindle, such that the lateral pull of the belt acts in the plane oi the single-race ball-bearing, so that the spindle is not subjected to bending stresses, whereby wear and tear is reduced to a minimuml It will be understoml that the details of :u'rangmmem and construction may be modified within the scope of the claims without departin; from this invention.

What I claim as mv invention and desire to secure by Letters .latent is 1. In a water-cooling system, the combination with a water-chamber having a bearing', a driving spindle extending through said bearing, and an impeller carried by said spindle in said water-chamber, of a bearing-enpport that is mounted on the water-cliamber and surrounds said spindle, a single-race ball-bearing spaced away from the water-cllamber, and mounted on the outside. of. said bearirig-support, and a rotary fan having a pulley integral with its hub secured on the other end of said spindle and arranged to embrace and operate on said ball-bearing, said pulley being situated in the same plane as said hall-bearing, sub

stantially as described.

In a water-cooling system, the comlm nation with a \vater-rlmnil)er having a hearing, a dr ving spindle extending through said hearing, and an impeller carried by said spindle in said-Water-chamber, of a hearing-support that is mounted on the water chamber and surrounds said spindle, a stalling-box for said spindle arranged in the wall of said water-chamber intermediate said bearing and said bearing-support, a single-race ball-bearing spaced from the water-clmmber and mounted on the Outside of said bearing-support, and a rotary fan having a pulley integral with its hub se-- cured on the other end of said spindle and arranged to embrace and operate on said ball-bearing, said pulley being situated in the saine'plane as said ball-bearing, substantially as described.

3. In a water-cooling system, the combination with a water chamber having a bearing, a driving spindle extending therethrough, and an impeller carried by said spindle in the water chamber, of a bearing support on the water chamber and surrounding said spindle, a bearing effective on said support in a single plane extending diametrically of said spindle, a fan havin a positive connection with said spindle, an

-a pulley secured to said fan, said pulley inclosing said bearing and disposed 1n the plane thereof, substantially as described.

in testimony whereof I a-l'lix my signature.

ROLAND. JAMES SULLY. 

